The AirTAC GFR40010MLC2WK AirTAC Filter Regulator PT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010MLC2WK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 3/8 in PT port, a fine 5 um filter element (code W, versus the 40 um standard), a manual drain bowl in PC (polycarbonate), a low-pressure regulator type, a round external gauge with a psi scale, a reverse/check valve, and the mounting bracket included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200 to 600 with port sizes from 1/8 in to 1 in and options for thread type (PT standard, G and NPT to order), drain type, filter grade, gauge style and scale. Flow is published as curves rather than a single rating, so we confirm flow and datasheet figures on request before you order.
| Model | GFR40010MLC2WK AirTAC Filter Regulator PT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Filtered, regulated air to fixture clamps on a machining centre: the 5 um element protects clamp cylinders from particulate, the low-pressure regulator holds a gentle clamp setting, and the psi gauge lets the setter read and repeat the setting at the machine.
A conditioning point ahead of capper and sorter actuators on a bottling line: the filter bowl drops out water and fine dirt, the regulator evens out supply swings, and the manual drain suits a station that is checked at every shift.
Clean, low-pressure air feeding a lab manifold or test bench: the 5 um grade keeps fine particles out of sensitive fittings, the low-pressure type matches modest working pressures, and the check valve holds the setting if upstream supply dips.
Size 400 with a PT3/8 port suits lines where the 3/8 in piping step matches your downstream air demand; step up or down a size if your flow requirement sits at the edge of the port step. The 5 um element (W code) is the right choice where finer particulate matters, such as downstream of sensitive valves or instruments; choose 40 um for general protection. The manual drain (M code) means an operator opens the bowl drain periodically - pick automatic or differential-pressure drain if nobody is on site to do that. The round psi gauge is an external fitment; an embedded square gauge with MPa, psi or bar scales is also available. PT is the standard thread; G (BSPP) and NPT are order options. The reverse/check valve is fitted and the bracket is included. Because flow is published as curves, not a single rating, ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and downstream demand and we will confirm the flow from the datasheet, including the curve for the 5 um element, before you order.
The M code means the bowl drain is opened by hand, so an operator should bleed collected water periodically; automatic or differential-pressure drain versions exist if that does not suit your site. The W code sets the filter element to 5 um instead of the 40 um standard, for finer particulate removal ahead of sensitive equipment.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.